JPS6045088B2 - Compressed air generator in automatic refueling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a compressed air generator in an automatic oil supply system that automatically supplies an appropriate amount of lubricating oil to the chain, which is the main body of the conveyor, in a conveyor using a universal chain such as a trolley conveyor. In more detail, the compressed air generated by an air compressor such as a piston pump in connection with the running of the conveyor chain is stored in an air tank, and a pneumatic plunger is attached.
This pneumatic plunger is linked to the air compressor, and when the air pressure in the air tank reaches a predetermined pressure, the pneumatic plunger is actuated to stop the operation of the air compressor. The present invention relates to a device that automatically generates compressed air for operating a refueling nozzle as a conveyor chain travels, without the need for a conveyor chain.

Automatic lubrication equipment for conveyor chains, etc.
As disclosed in Japanese Patent No. 23420, etc., the automatic oil supply device is operated in conjunction with the running of a conveyor chain, and a nozzle is disposed near the conveyor chain. Oil and compressed air are passed through a nozzle, and the oil is atomized or injected using the compressed air. 3. By the way, the compressed air generating device in the conventional automatic refueling system as described above requires an electric power source in which the air compressor is operated by a motor via a speed reducer or the like.

However, from the perspective of saving resources, it is desired that not only the oil supply parts such as nozzles, but also the compressed air generator can be operated in conjunction with the running of the conveyor chain without requiring a special power source. Ta.

Here, the present invention provides an automatic oil supply device that can operate in conjunction with the running of a conveyor chain, adjust the generated air pressure to a predetermined pressure, and supply compressed air toward a nozzle within a predetermined pressure range. This is a compressed air generator.

The present invention will be specifically explained below based on the embodiments shown in the drawings.

In Figures 1 and 2, numeral 1 is the rail of the trolley conveyor;
2 and 3 are a vertical roller and a horizontal roller, respectively, which run within the rail 1, and these rollers 2, 2...3, 3
... are mutually connected by link plates and pins, and constitute a universal chain 4 as a whole.

This device is mounted on frames 5 and 5 on the top of the trolley conveyor.
etc., and these frames 5, 5
First, an oil tank 6 is placed near the bottom of the tank, and above it a piston pump 7 serving as an air compressor and an air tank 8 are placed side by side.

The discharge port of the piston pump 7 is connected to the air tank 8 via a discharge valve 9 formed by, for example, a ball valve and a conduit 10. In the piston pump 7, reference numeral 7'' is a piston, 11 is a suction valve provided at the piston 7'', 13 is a return spring for the piston, and 14 is a piston rod connected to the piston 7''.

Reference numeral 15 denotes a bell crank-shaped lever, and this lever 15 is pivoted 16'' to a support member 16 fixed to the upper side of the rail 1 of the trolley conveyor.
One end 15a of the rail 1 faces inside the rail 1, and this one end 15a
Attach the cam roller 17 to the working end 1
In 5b. The piston rod 14 is connected. The cam roller 17 is brought into contact with the outer circumferential surface of the vertical roller 2 of the universal chain 4 so that the piston 7'' reciprocates as the chain 4 runs.Furthermore, the lever 1
5, an appropriate protrusion is provided at a portion located approximately midway between the fulcrum 16'' and the one end 15b and opposite to the mounting side of the piston rod 14, and the second cam roller 18 is attached to this protrusion. A pneumatic plunger 19 is disposed such that a plunger rod 19'' is positioned corresponding to the second cam roller 18, and this pneumatic plunger 19 is connected to the air tank 8 via a conduit 20. When the air pressure in the air tank 8 reaches a predetermined pressure of, for example, about 3.5 k9/d, the pneumatic plunger 19 is actuated to project the plunger rod 19'' toward the cam roller 18, and the lever 15 is moved as shown in the figure. is rotated in the direction of arrow A to release the contact between the cam roller 17 and the vertical roller 2. On the other hand, reference numeral 22 is a nozzle for oil supply, and this nozzle 22 is arranged on the side surface of the rail 1, for example. The injection port 22'' faces the oil supply port 23 bored in the side wall of the rail 1.

This nozzle 22 is connected to the air tank 8 via two air supply pipes, a piston cylinder 25 for intermittent compressed air, and a pressure switch 26. Further, the nozzle 22 is connected to a separate oil tank 6 via an oil feed pipe 27. Reference numeral 25''7 is a piston fixed to the piston rod 25'', and this piston cuts off and on the compressed air. Further, an appropriate protrusion is provided at a portion of the lever 15 located on the side opposite to the side on which the second cam roller 18 is attached, and the third cam roller 28j is attached to this protrusion.

This third cam row 28 is made to correspond to the piston rod 25'' in the compressed air intermittent piston cylinder 25, and the piston cylinder 25 is actuated by the lever 15, which swings in relation to the running of the conveyor chain 4, to supply compressed air. The compressed air generator is intermittently supplied to the nozzle 22.The compressed air generator in the automatic oil supply system according to the embodiment of the present invention is constructed as described above and operates as follows.

At the beginning of startup, the pressure switch 26 turns 0FF and the air supply pipe 2
4 is in a closed circuit state.

When the trolley conveyor is operated in this state, the vertical rollers 2,
The outer peripheral surfaces of 2... contact the cam roller 17 and push up the cam roller 17 intermittently.

Due to this push-up action and the elasticity of the return spring 13, the lever 15 swings about the pivot point 16'', causing the piston 7'' to reciprocate and cause the piston pump 7 to generate compressed air. This compressed air is then sent to the air tank 8 via the discharge valve 9 and stored therein. Further, as the lever 15 swings, the piston rod 25'' in the piston cylinder 25 also reciprocates, but as described above, since the pressure switch 26 is in the OFF state, no compressed air is supplied to the nozzle 22.

As an example, the air pressure inside the air tank 8 is 3 kg/C.
When the predetermined set pressure of lt is reached, the pressure switch 26 changes to the ON state, the air supply pipe 24 opens, and the
Compressed air reaching an air pressure of

The compressed air intermittently supplied in this manner injects or sprays oil from the injection port 22'' and supplies the oil toward the chain 4.

Even during the refueling operation described above, the piston pump 7 continues to operate and acts to increase the air pressure in the air tank 8. For example, this air pressure is 3.5k9/CT.
When the predetermined pressure of l is reached, the pneumatic plunger 19 is activated,
The plunger rod 19' projects and rotates the lever 15 by a predetermined amount in the direction of arrow A in FIG. 1, and maintains the lever 15 in this rotated state.

That is, the above rotational movement causes the cam roller 17 to remain stopped at a position slightly above the uppermost position pushed up by the vertical roller 2, and the contact between the cam roller 17 and the vertical roller 2 is released. The operation of the piston pump 7 is stopped.

At the same time, the piston rod 25'' in the piston cylinder 25 is also pushed to the right in FIG.
4 is stopped and maintained in a closed state. During the above-mentioned stopped state, there is a natural pressure drop in the air tank 8, and when the air pressure drops to 3.5 kg/d or less again, the protruding state of the plunger rod 19" is released and the lever 15 That is, the piston cylinder 25 is restarted to supply intermittent air to the nozzle 22, and the oil supply operation to the chain 4 is started again.

That is, the air pressure in the air tank 8 is 3k9/CI as an example.
Only when the pressure is within a constant pressure range of L~3.5k9/d, compressed air consisting of the air pressure is intermittently supplied toward the nozzle 22 to perform lubrication, and the pressure is maintained within the above constant pressure range. By appropriately adjusting the amount of time required for the chain 4 to be properly lubricated, the chain 4 can always be properly lubricated automatically.

In the illustrated embodiment, a piston pump equipped with a return spring is used as the air compressor, but instead of this, an air compressor equipped with a return function such as a bellows may be used.

Furthermore, although a case has been described in which a pneumatic plunger is used as a means for releasing the cam roller attached to one end of the lever from the traveling roller, the present invention provides an electromagnetic plunger in place of the pneumatic plunger, and this electromagnetic plunger is separately arranged. The cam roller and the traveling roller may be controlled to be operated by a pressure switch provided, and when the compressed air reaches a predetermined pressure, an electromagnetic plunger is operated via the pressure switch to release the cam roller and the traveling roller.

As described in detail above, according to the present invention, an air compressor such as a piston pump is operated in connection with the running of a conveyor chain, and the air compressed by the air compressor is stored in an air tank, and the air pressure is A plunger is attached, this pneumatic plunger is linked to the air compressor, and when the air pressure in the air tank reaches a predetermined pressure, this pneumatic plunger is activated and the operation of the air compressor is stopped. , it is possible to generate compressed air in connection with the running of the conveyor chain without requiring any special electric power means, etc., and to maintain this compressed air at a predetermined pressure at all times. It has an excellent effect.

In addition, a piston cylinder for intermittent compressed air is separately attached, and this piston cylinder is interposed in the air supply pipe leading from the air tank to the refueling nozzle. Since the compressed air is reciprocated and the compressed air is intermittently supplied toward the nozzle, the above-mentioned generation of compressed air and the intermittent supply of compressed air are all related to the running of the conveyor chain. This type of device has an extremely excellent effect in that it can be carried out automatically and appropriately.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view showing a compressed air generating device in an automatic oil supply system according to an embodiment of the present invention, and FIG. 2 is a side view of the same device. 1...Rail, 2...Vertical roller, 3...Horizontal roller, 4...Universal chain, 5...Frame,
6...Oil tank, 7...Piston pump, 7″
... Zestone, 8... Air tank, 9... Discharge valve,
10, 20... Conduit, 11... Suction valve, 13...
Return spring, 14... Zeston rod, 15...
Rubber, 16...Supporting member, 17, 18, 28...
Cam roller, 19...Pneumatic plunger, 19ζ...
Plunger rod, 22... Nozzle, 23... Oil supply port, 24... Air supply pipe, 25... Piston cylinder,
25″...Piston rod, 26...Pressure switch, 27...Oil pipe.

Claims (1)

[Claims] 1. An air compressor is actuated via a cam that is in contact with and responds to a running roller of a conveyor chain and a lever that is connected to the cam roller, and the air compressor is connected to an air tank; The air in the air tank is guided to a pneumatic plunger for stopping the operation of the air compressor, and when the air pressure in the air tank reaches a predetermined pressure,
Compression in an automatic oil supply device, characterized in that the pneumatic plunger is actuated to rotate the lever by a predetermined amount, and this rotation releases the contact and disengagement between the cam roller and the traveling roller. Air generator. 2. A compressed air generating device in an automatic oil supply system according to claim 1, characterized in that a piston pump is used as the air compressor. 3 A lever connected to the cam roller is separately connected to the piston rod in the piston cylinder for intermittent compressed air, and when the air pressure in the air tank is within a certain pressure range below a certain pressure, the compressed air in the air tank is refueled. 3. A compressed air generator in an automatic oil supply system according to claim 1 or 2, wherein the compressed air is intermittently supplied to a nozzle for use.